# A calculus problem by Aman Dubey

Calculus Level pending

if $$f(x) ={ x }^{ 3 }+3x+2$$ and $$g(f(x))=x$$ and $$h(g(g(x))=x$$ for all $$x\quad \in \mathbb R$$ then find $${ h }^{ ' }(1)$$.

Notation: $$\mathbb R$$ denotes the set of real numbers.

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